Hydrodynamics, viscous electron fluid, and Wiedeman-Franz law in two-dimensional semiconductors

被引：15

作者：

Ahn, Seongjin ^{[1
,2
]}

Das Sarma, Sankar ^{[2
]}

机构：

[1] Univ Maryland, Condensed Matter Theory Ctr, College Pk, MD 20742 USA

[2] Univ Maryland, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2022年 / 106卷 / 08期

关键词：

LIFETIME; FLOW;

D O I：

10.1103/PhysRevB.106.L081303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Considering theoretically the transition between hydrodynamic and ballistic regimes in 2D semiconductors, we show that electrons in high-mobility 2D GaAs are by far the best system for the direct observation of collective hydrodynamic effects even in bulk transport properties independent of complicated transport features in narrow constrictions and small systems where Gurzhi phenomena are typically studied experimentally. We predict a strong hydrodynamics-induced generic violation of the Wiedeman-Franz law in bulk 2D GaAs systems for mobilities as modest as 106cm2/Vs and densities 1-5 x 1011cm-2 in the temperature range of T = 1-40 K.

引用

页数：5

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